/// <summary>
/// Shoots single primary ray only..
/// </summary>
/// <param name="x">X-coordinate inside the raster image.</param>
/// <param name="y">Y-coordinate inside the raster image.</param>
private void singleSample(int x, int y)
{
// determine output image size:
int width = ImageWidth;
if (width <= 0)
{
width = panel1.Width;
}
int height = ImageHeight;
if (height <= 0)
{
height = panel1.Height;
}
if (dirty || imfs == null)
{
imfs = getImageFunction(FormSupport.getScene(), width, height);
dirty = false;
}
double[] color = new double[3];
MT.InitThreadData();
long hash = imfs.GetSample(x + 0.5, y + 0.5, color);
labelSample.Text = string.Format(CultureInfo.InvariantCulture, "Sample at [{0},{1}] = [{2:f},{3:f},{4:f}], {5:X}",
x, y, color[0], color[1], color[2], hash);
}
/// <summary>
/// [Re]-renders the whole image (in separate thread).
/// </summary>
private void RenderImage()
{
Cursor.Current = Cursors.WaitCursor;
// determine output image size:
int width = ImageWidth;
if (width <= 0)
{
width = panel1.Width;
}
int height = ImageHeight;
if (height <= 0)
{
height = panel1.Height;
}
Bitmap newImage = new Bitmap(width, height, PixelFormat.Format24bppRgb);
int threads = checkMultithreading.Checked ? Environment.ProcessorCount : 1;
int t; // thread ordinal number
WorkerThreadInit[] wti = new WorkerThreadInit[threads];
// separate renderer, image function and the scene for each thread (safety precaution)
for (t = 0; t < threads; t++)
{
IRayScene sc = FormSupport.getScene();
IImageFunction imf = getImageFunction(sc, width, height);
IRenderer r = getRenderer(imf, width, height);
wti[t] = new WorkerThreadInit(r, sc as ITimeDependent, imf as ITimeDependent, newImage, width, height, t, threads);
}
progress.SyncInterval = ((width * (long)height) > (2L << 20)) ? 30000L : 10000L;
progress.Reset();
CSGInnerNode.ResetStatistics();
lock ( sw )
{
sw.Reset();
sw.Start();
}
if (threads > 1)
{
Thread[] pool = new Thread[threads];
for (t = 0; t < threads; t++)
{
pool[t] = new Thread(new ParameterizedThreadStart(RenderWorker));
}
for (t = threads; --t >= 0;)
{
pool[t].Start(wti[t]);
}
for (t = 0; t < threads; t++)
{
pool[t].Join();
pool[t] = null;
}
}
else
{
MT.InitThreadData();
wti[0].rend.RenderRectangle(newImage, 0, 0, width, height);
}
long elapsed;
lock ( sw )
{
sw.Stop();
elapsed = sw.ElapsedMilliseconds;
}
string msg = string.Format(CultureInfo.InvariantCulture, "{0:f1}s [ {1}x{2}, mt{3}, r{4:#,#}k, i{5:#,#}k, bb{6:#,#}k, t{7:#,#}k ]",
1.0e-3 * elapsed, width, height, threads,
(Intersection.countRays + 500L) / 1000L,
(Intersection.countIntersections + 500L) / 1000L,
(CSGInnerNode.countBoundingBoxes + 500L) / 1000L,
(CSGInnerNode.countTriangles + 500L) / 1000L);
SetText(msg);
Console.WriteLine("Rendering finished: " + msg);
SetImage(newImage);
Cursor.Current = Cursors.Default;
StopRendering();
}